/**
 * ***************************************************************************** Copyright (c) 2005,
 * 2006 Subclipse project and others. All rights reserved. This program and the accompanying
 * materials are made available under the terms of the Eclipse Public License v1.0 which accompanies
 * this distribution, and is available at http://www.eclipse.org/legal/epl-v10.html
 *
 * <p>Contributors: Subclipse project committers - initial API and implementation
 * ****************************************************************************
 */
package org.tigris.subversion.subclipse.ui.subscriber;

import java.lang.reflect.InvocationTargetException;
import org.eclipse.compare.structuremergeviewer.IDiffElement;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.jface.dialogs.ProgressMonitorDialog;
import org.eclipse.jface.operation.IRunnableWithProgress;
import org.eclipse.swt.custom.BusyIndicator;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.team.core.synchronize.SyncInfoSet;
import org.eclipse.team.ui.history.IHistoryView;
import org.eclipse.team.ui.synchronize.ISynchronizePageConfiguration;
import org.eclipse.ui.IViewPart;
import org.eclipse.ui.PartInitException;
import org.tigris.subversion.subclipse.core.ISVNRemoteResource;
import org.tigris.subversion.subclipse.core.SVNTeamProvider;
import org.tigris.subversion.subclipse.ui.ISVNUIConstants;
import org.tigris.subversion.subclipse.ui.SVNUIPlugin;

public class ShowHistorySynchronizeOperation extends SVNSynchronizeOperation {

  private IResource resource;
  private ISVNRemoteResource remoteResource;

  public static final int PROGRESS_DIALOG = 1;
  public static final int PROGRESS_BUSYCURSOR = 2;

  public ShowHistorySynchronizeOperation(
      ISynchronizePageConfiguration configuration, IDiffElement[] elements, IResource resource) {
    super(configuration, elements);
    this.resource = resource;
  }

  public ShowHistorySynchronizeOperation(
      ISynchronizePageConfiguration configuration,
      IDiffElement[] elements,
      ISVNRemoteResource remoteResource) {
    super(configuration, elements);
    this.remoteResource = remoteResource;
  }

  protected boolean promptForConflictHandling(Shell shell, SyncInfoSet syncSet) {
    return true;
  }

  protected void run(SVNTeamProvider provider, SyncInfoSet set, IProgressMonitor monitor)
      throws InvocationTargetException, InterruptedException {
    run(
        new IRunnableWithProgress() {
          public void run(IProgressMonitor monitor) {
            getShell()
                .getDisplay()
                .syncExec(
                    new Runnable() {
                      public void run() {
                        IHistoryView view =
                            (IHistoryView) showView(ISVNUIConstants.HISTORY_VIEW_ID);
                        if (view != null) {
                          if (resource == null) {
                            view.showHistoryFor(remoteResource);
                          } else {
                            view.showHistoryFor(resource);
                          }
                        }
                      }
                    });
          }
        },
        false /* cancelable */,
        PROGRESS_BUSYCURSOR);
  }

  protected final void run(
      final IRunnableWithProgress runnable, boolean cancelable, int progressKind)
      throws InvocationTargetException, InterruptedException {
    final Exception[] exceptions = new Exception[] {null};

    // Ensure that no repository view refresh happens until after the action
    final IRunnableWithProgress innerRunnable =
        new IRunnableWithProgress() {
          public void run(IProgressMonitor monitor)
              throws InvocationTargetException, InterruptedException {
            SVNUIPlugin.getPlugin().getRepositoryManager().run(runnable, monitor);
          }
        };

    switch (progressKind) {
      case PROGRESS_BUSYCURSOR:
        BusyIndicator.showWhile(
            Display.getCurrent(),
            new Runnable() {
              public void run() {
                try {
                  innerRunnable.run(new NullProgressMonitor());
                } catch (InvocationTargetException e) {
                  exceptions[0] = e;
                } catch (InterruptedException e) {
                  exceptions[0] = e;
                }
              }
            });
        break;
      case PROGRESS_DIALOG:
      default:
        new ProgressMonitorDialog(getShell())
            .run(true, cancelable, /*cancelable, true, */ innerRunnable);
        break;
    }
    if (exceptions[0] != null) {
      if (exceptions[0] instanceof InvocationTargetException)
        throw (InvocationTargetException) exceptions[0];
      else throw (InterruptedException) exceptions[0];
    }
  }

  protected IViewPart showView(String viewId) {
    try {
      return getPart().getSite().getPage().showView(viewId);
    } catch (PartInitException pe) {
      return null;
    }
  }
}
